撞角球鼻艏形式和参数变化对阻力影响的研究

通过数值计算及模型试验确定了撞角球鼻艏形式和参数对阻力的影响。针对3个形式各异的球鼻艏方案,开展了CFD计算和模型试验,结果显示:当傅汝德数为0.28时,撞角球鼻艏的剩余阻力系数比无球鼻艏的剩余阻力系数约小20%。以8个主要参数各异的撞角球鼻艏方案为对象,采用CFD技术分析了撞角球鼻艏的参数变化对兴波阻力的影响,并确定了撞角球鼻艏的宽度比和纵向长度比对兴波阻力系数的影响。

Effects of Embolon Bulbous Bow Profile and Parameters on Ship Resistance

Three profile bulbous bow＇s scheme were designed for a ship,and we used CFD technology and model test to ascertain which bulbous bow＇s profile was better.The research results show that embolon bulbous bow is good for reducing the ship resistance.When Fn is 0.28,embolon bulbous bow reduces ship residual resistance 20%.Eight embolon bulbous bow with different main parameters were designed,and we used CFD technology to analyze variant parameters＇ effects on wave resistance.The ratio of bulbous bow length to waterline length has more effects on ship residual resistance than other parameters.